Cramping and stuff... ?

I have been experiencing cramps, worse than I would usually get before AF. This is our first month TTC and I'm 11-15 DPO (glow said it was one day, I felt ovation happened a few days later.) Is it possible to get cramps like this, this late in the game? I took an early pregnancy test 8-10 DPO and it was a BFN-- I assumed it would be however, I'm sort of holding onto hope that these cramps could be something more. Also, similar to other months my boobs stated hurting and it&s usually for a few days, this was for almost a week, then they are eventually stopped hurting. So many symptoms I just can't make sense of them all! Thanks...